<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDiologVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
            <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                    <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                </el-tooltip>
            </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>

        <!-- 添加用户的对话框 -->
      <el-dialog
        title="添加用户"
        :visible.sync="addDiologVisible"
        width="50%" @close="addFormClosed">
        <el-form ref="addFormRef" :model="addForm" :rules="addFormRules" label-width="80px" >
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDiologVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 修改用户的对话框 -->
      <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%" @close="editDialogClosed">
        <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email" ></el-input>
            </el-form-item>
            <el-form-item label="手机号" prop="mobile">
                <el-input v-model="editForm.mobile" ></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 分配角色的对话框 -->
      <el-dialog
        title="提示"
        :visible.sync="setRoleDialogVisible"
        width="50%" @close="setRoleDialogClosed">
        <div>
          <p>当前的用户：{{userInfo.username}}</p>
          <p>当前的角色：{{userInfo.role_name}}</p>
          <p>分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in roleslist"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
export default {
    data () {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
        // 验证 邮箱的正则表达式
        const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
        if (regEmail.test(value)) {
            // 合法的邮箱
            cb()
        }
        cb(new Error('请输入合法的邮箱!'))
    }
    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
        // 验证 手机号的正则表达式
        const regMobile =
        /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
        if (regMobile.test(value)) {
            // 合法的手机号
            cb()
        }
        cb(new Error('请输入合法的手机号!'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      userlist: [],
      total: 0,
    // 控制添加用户对话框的显示与隐藏
      addDiologVisible: false,

    //   添加用户的表单数据
      addForm: {
          username: '',
          password: '',
          email: '',
          mobile: ''
      },
    //   添加表单的验证规则对象
      addFormRules: {
          username: [{ required: true, message: '请输入用户名', trigger: 'blur' }, {
              min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur'
          }],
          password: [{ required: true, message: '请输入密码', trigger: 'blur' }, {
              min: 6, max: 15, message: '用户名的长度在6~15个字符之间', trigger: 'blur'
          }],
          email: [{ required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }],
          mobile: [{ required: true, message: '请输入手机号', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }]
      },
    //   控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
    // 查询到的用户信息对象
      editForm: {},
    //   修改表单的验证规则对象
      editFormRules: {
            email: [{ required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }],
          mobile: [{ required: true, message: '请输入手机号', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }]
        },
    // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
    // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      roleslist: [],
      // 已选中的角色id值
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    // 监听 pagesize 改变的事件
    handleSizeChange (newSize) {
        this.queryInfo.pagesize = newSize
        this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange (newPage) {
        this.queryInfo.pagenum = newPage
        this.getUserList()
    },
    // 监听 switch 开关状态的改变
    async userStateChanged (userinfo) {
        const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        if (res.meta.status !== 200) {
            userinfo.mg_state = !userinfo.mg_state
            this.$message.error('更新用户状态失败!')
        }
        this.$message.success('更新用户状态成功!')
    },
    // 监听添加用户对话框的关闭事件
    addFormClosed () {
        this.$refs.addFormRef.resetFields()
    },
    // 点击按钮,添加新用户
    addUser () {
        this.$refs.addFormRef.validate(async valid => {
            if (!valid) return
            // 可以发起添加用户的网络请求
            const { data: res } = await this.$http.post('users', this.addForm)
            if (res.meta.status !== 201) {
                this.$message.error('添加用户失败!')
            }
            this.$message.success('添加用户成功!')
            // 隐藏添加用户的对话框
            this.addDiologVisible = false
            // 重新获取列表
            this.getUserList()
        })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
        const { data: res } = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) {
            return this.$message.error('查询用户信息失败!')
        }
        this.editForm = res.data
        this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed () {
        this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
        this.$refs.editFormRef.validate(async valid => {
            if (!valid) return
            // 发起修改用户信息的数据请求
            const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
            if (res.meta.status !== 200) {
                return this.$message.error('更新用户信息失败!')
            }
            // 关闭对话框
            this.editDialogVisible = false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
            this.$message.success('更新用户信息成功!')
        })
    },
    // 根据 id 删除对应的用户信息
    async removeUserById (id) {
        // 弹框询问用户是否删除 数据
        const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        // 如果用户确认了删除,则返回值为字符串 confirm
        // 如果用户取消了删除, 则返回值为字符串 cancel
        // console.log(confirmResult)
        if (confirmResult !== 'confirm') {
            return this.$message.info('已取消删除!')
        }
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) {
            return this.$message.error('删除用户失败!')
        }
        this.$message.success('删除用户成功!')
        this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        this.$message.error('获取角色列表失败！')
      }
      this.roleslist = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮，分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }
      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
</style>
